Attachment for facial treatment device



FIG. 1 is a top perspective view of an attachment for a facial treatment device, showing the claimed design;

FIG. 2 is a front elevational view thereof, the rear, left and right elevational views being mirror images thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof; and,

FIG. 5 is a bottom perspective view thereof.

The broken lines shown in the figures are for the purpose of illustrating portions of the attachment for a facial treatment device that form no part of the claimed design. 

CLAIM The ornamental design for an attachment for a facial treatment device, as shown and described. 